ANIMAL REPRODUCTIONS. 259 
‘ To elucidate the matter, and preferve regula- 
tity, it will be proper to divide the treatife into 
three articles: The firft will enumerate thofe ex- 
periments that controvert my difcovery; the fe- 
cond will comprehend thofe confirming it; and 
the thitd will embrace a few reflections that I 
have efteemed applicable for removing doubt; and 
placing the truth in a clearer point of view. 
ARTICLE I.—EXPERIMENTS ADVERSE TO THE 
REPRODUCTION OF THE HEAD OF THE SNAIL. 
We may call the Avant Coureur,a weekly pub- 
lication in Paris, the field of battle; where many 
authors have contended both for the reproduc- 
tions of decapitated fnails and againft them. The 
firft oppofition was made in 1768. ‘ M. Wartel, 
‘about the end of Oéober 1767, decapitated 
* many fnails, which fuddenly retired within their 
© fhells. With great furprife he faw them iffue 
é from their dwellings full of life, but without the 
‘ head, in May 1768. He does not imagine that 
‘ the reproduction of the head is poflible: fince 
‘none of his repaired it, and fome did not even 
« renew the horns.’ 
Father Cotté repeated thefe experiments, as ap- 
pears from the fame journal, May 1769. In June, 
taking advantage of a fhower of rain, he decapi- 
K 2 tated 
